On December 8, 2025 Karyopharm Therapeutics Inc. (Nasdaq: KPTI), a commercial-stage pharmaceutical company pioneering novel cancer therapies, reported that the Company’s senior management team and Dr. Claire Harrison will participate in a virtual fireside chat as part of Baird’s Biotech Discovery Series on Wednesday, December 10, 2025 at 12:00 p.m. ET. Dr. Harrison is Professor of Myeloproliferative Neoplasms, Clinical Director at Guy’s and St. Thomas’ NHS Foundation Trust and a leading international expert in myelofibrosis.

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A live webcast of the event can be accessed under "Events & Presentations" in the Investor section of the Company’s website, View Source, and will be available for replay following the event.

(Press release, Karyopharm, DEC 8, 2025, View Source [SID1234661262])